inspra

HFrEF Post-MI: Initiate treatment with 25 mg once daily. Titrate to maximum of 50 mg once daily within 4 weeks, as tolerated. Dose adjustments may be required based on potassium levels. ( 2.1 ) Hypertension: 50 mg once daily, alone or combined with other antihypertensive agents. For inadequate response, increase to 50 mg twice daily. Higher dosages are not recommended. ( 2.2 ) For all patients: Measure serum potassium before starting INSPRA and periodically thereafter. ( 2.3 ) 2.1 Heart Failure Post-Myocardial Infarction Initiate treatment at 25 mg once daily and titrate to the recommended dose of 50 mg once daily, preferably within 4 weeks as tolerated by the patient. Once treatment with INSPRA has begun, adjust the dose based on the serum potassium level as shown in Table 1. Table 1. Dose Adjustment in Heart Failure Post-MI Serum Potassium (mEq/L) Dose Adjustment <5.0 25 mg every other day to 25 mg once daily 25 mg once daily to 50 mg once daily 5.0-5.4 No adjustment 5.5-5.9 50 mg once daily to 25 mg once daily 25 mg once daily to 25 mg every other day 25 mg every other day to withhold ≥6.0 Withhold and restart at 25 mg every other day when potassium levels fall to <5.5 mEq/L 2.2 Hypertension The recommended starting dose of INSPRA is 50 mg administered once daily. The full therapeutic effect of INSPRA is apparent within 4 weeks. For patients with an inadequate blood…

The following adverse reactions are discussed in greater detail in other sections of the labeling: • Hyperkalemia [see Warnings and Precautions (5.1) ] HFrEF Post-MI: Most common adverse reactions (>2% and more frequent than with placebo): hyperkalemia and increased creatinine. ( 6.1 ) Hypertension: In clinical studies, adverse reactions with INSPRA were uncommon. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Viatris at 1-877-446-3679 (1-877-4-INFO-RX) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in clinical trials of another drug and may not reflect the rates observed in practice. Heart Failure Post-Myocardial Infarction In EPHESUS, safety was evaluated in 3307 patients treated with INSPRA and 3301 placebo-treated patients. The overall incidence of adverse events reported with INSPRA (78.9%) was similar to placebo (79.5%). Adverse events occurred at a similar rate regardless of age, gender, or race. Patients discontinued treatment due to an adverse event at similar rates in either treatment group (4.4% INSPRA vs. 4.3% placebo), with the most common reasons for discontinuation being hyperkalemia, MI, and abnormal renal function. Adverse reactions that occurred…

For All Patients INSPRA is contraindicated in all patients with: • serum potassium >5.5 mEq/L at initiation, • creatinine clearance ≤30 mL/min, or • concomitant administration of strong CYP3A inhibitors (e.g., ketoconazole, itraconazole, nefazodone, troleandomycin, clarithromycin, ritonavir, and nelfinavir) [see Drug Interactions (7.1) , Clinical Pharmacology (12.3) ] . For Patients Treated for Hypertension INSPRA is contraindicated for the treatment of hypertension in patients with: • type 2 diabetes with microalbuminuria, • serum creatinine >2.0 mg/dL in males or >1.8 mg/dL in females, • creatinine clearance <50 mL/min, or • concomitant administration of potassium supplements or potassium-sparing diuretics (e.g., amiloride, spironolactone, or triamterene) [see Warnings and Precautions (5.1) , Adverse Reactions (6.2) , Drug Interactions (7) , and Clinical Pharmacology (12.3) ] . For all patients: • Serum potassium >5.5 mEq/L at initiation ( 4 ) • Creatinine clearance ≤30 mL/min ( 4 ) • Concomitant use with strong CYP3A inhibitors ( 4 , 7.1 ) For the treatment of hypertension: • Type 2 diabetes with microalbuminuria ( 4 ) • Serum creatinine >2.0 mg/dL in males, >1.8 mg/dL in females ( 4 ) • Creatinine clearance <50 mL/min ( 4 ) • Concomitant use of potassium supplements or potassium-sparing diuretics ( 4 )

No cases of human overdosage with eplerenone have been reported. Lethality was not observed in mice, rats, or dogs after single oral doses that provided C max exposures at least 25 times higher than in humans receiving eplerenone 100 mg/day. Dogs showed emesis, salivation, and tremors at a C max 41 times the human therapeutic C max , progressing to sedation and convulsions at higher exposures. The most likely manifestation of human overdosage would be anticipated to be hypotension or hyperkalemia. Eplerenone cannot be removed by hemodialysis. Eplerenone has been shown to bind extensively to charcoal. If symptomatic hypotension should occur, supportive treatment should be instituted. If hyperkalemia develops, standard treatment should be initiated.

U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.

CYP3A Inhibitors: In post-MI HFrEF patients, do not exceed 25 mg once daily when used with moderate CYP3A inhibitors (e.g., verapamil, erythromycin, saquinavir, fluconazole). In patients with hypertension, initiate at 25 mg once daily. For inadequate blood pressure response, dosing may be increased to a maximum of 25 mg twice daily. ( 2.4 , 7.1 , 12.3 ) 7.1 CYP3A Inhibitors Eplerenone metabolism is predominantly mediated via CYP3A. Do not use INSPRA with drugs that are strong inhibitors of CYP3A [see Contraindications (4) and Clinical Pharmacology (12.3) ] . In post-MI HFrEF patients taking a moderate CYP3A inhibitor, do not exceed 25 mg once daily. In patients with hypertension taking a moderate CYP3A inhibitor, initiate at 25 mg once daily. For inadequate blood pressure response, dosing may be increased to a maximum of 25 mg twice daily [see Dosage and Administration (2.3 , 2.4) and Clinical Pharmacology (12.3) ] . 7.2 ACE Inhibitors and Angiotensin II Receptor Antagonists The risk of hyperkalemia increases when eplerenone is used in combination with an ACE inhibitor and/or an ARB. A close monitoring of serum potassium and renal function is recommended, especially in patients at risk for impaired renal function, e.g., the elderly [see Warnings and Precautions (5.1) ] . 7.3 Lithium A drug interaction study of eplerenone with lithium has not been conducted. Lithium toxicity has been reported in patients receiving lithium concomitantly with diuretics and ACE inhibitors. Serum lithium levels should be monitored frequently if INSPRA is administered concomitantly with lithium. 7.4 Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) A drug interaction study of eplerenone with an NSAID has not been conducted. The administration of other potassium-sparing antihypertensives with NSAIDs has been shown to reduce the antihypertensive effect in some patients and result in severe hyperkalemia in patients with impaired renal function. Therefore, when INSPRA and NSAIDs are used concomitantly, monitor blood pressure and serum potassium levels.